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Official Journal of the Italian Society of Orthopaedics and Traumatology

Fig. 4 | Journal of Orthopaedics and Traumatology

Fig. 4

From: The relationship between quadriceps fat pad syndrome and patellofemoral morphology: a case–control study

Fig. 4

a The ratio of patellar tendon length (Line B) to longest diagonal length of patella (line A) was calculated as the Insall–Salvati ratio. b The ratio of length of articular surface of patella (line C) to length of opposing femoral articular surface (line D) was calculated as patellotrochlear index. c The distance between the most anterior and most posterior border of the quadriceps tendon just over the patellar attachment was measured and recorded as quadriceps tendon thickness. All measurements were performed on sagittal fat-saturated, proton-density-weighted MRI

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